chore(guide): Add CONTRIBUTING.md

CONTRIBUTING.md

@@ -0,0 +1,78 @@
+# Contribution Guide
+
+Contributions are welcome! We appreciate your help in making repopack better.
+You can contribute in the following ways:
+
+- Create an Issue - Propose a new feature or report a bug.
+- Pull Request - Fix a bug, add a feature, or improve documentation.
+- Share - Share your thoughts about repopack on blogs, social media, or in tech communities.
+- Use repopack in your projects - Practical usage often leads to valuable feedback and improvements.
+
+Note:
+repopack is maintained by Yamadashy ([@yamadashy](https://github.com/yamadashy)). While we welcome contributions, please understand that not all suggestions may be accepted, especially if they don't align with the project's goals or coding style.
+
+## Installing dependencies
+
+The `yamadashy/repopack` project uses [npm](https://www.npmjs.com/) as its package manager. Developers should have Node.js and npm installed.
+
+After that, please install the dependencies:
+
+```bash
+npm install
+```
+
+## Pull Requests
+
+Before submitting a Pull Request, please ensure:
+
+1. Your code passes all tests: Run `npm run test`
+2. Your code adheres to our linting standards: Run `npm run lint`
+3. You have updated relevant documentation (especially README.md) if you've added or changed functionality.
+
+## Local Development
+
+To set up Repopack for local development:
+
+```bash
+git clone https://github.com/yamadashy/repopack.git
+cd repopack
+npm install
+```
+
+To run Repopack locally:
+
+```bash
+npm run cli-run
+```
+
+## Coding Style
+
+We use [Biome](https://biomejs.dev/) for linting and formatting. Please make sure your code follows the style guide by running:
+
+```bash
+npm run lint
+```
+
+## Testing
+
+We use [Vitest](https://vitest.dev/) for testing. To run the tests:
+
+```bash
+npm run test
+```
+
+For test coverage:
+
+```bash
+npm run test-coverage
+```
+
+## Documentation
+
+When adding new features or making changes, please update the relevant documentation in the README.md file.
+
+## Releasing
+
+Releasing new versions is handled by the project maintainer. If you believe a new release is needed, please open an issue to discuss it.
+
+Thank you for contributing to Repopack!

README.md

@@ -489,5 +489,11 @@ By default, Repopack's security check feature is enabled. You can disable it by
 
 
 
+## Contribution
+
+See [Contributing Guide](CONTRIBUTING.md).
+
+
+
 ## 📜 License
 MIT